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: http://www.iki.rssi.ru/galeev/abs_eng/e020912a.htm
Дата изменения: Fri Sep 6 13:59:05 2002 Дата индексирования: Tue Oct 2 11:44:21 2012 Кодировка: Поисковые слова: arp 220 |
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"X-ray
observation of middle-aged SNRs Prof. Hiroshi Tsunemi (Graduate School of Science, Earth and Space Science Osaka University) Abstract: We have studied the Cygnus Loop, a typical middle-aged SNR, in X-ray using the Asca and Rosat satellites. The middle-aged SNR showing thermal emission is a good place to study the evolution of the interstellar matter. The shell region, high density region, shows a abundance of the ISM while the inner region, low density region, shows a metal rich abundance originating from the ejecta. Other middle-aged SNRs showing center-filled structure may reflect the thermal energy contained inside the SNR. We have estimated the total energy of the SN. Some other SNRs may be mentioned.
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